Anti-mold and fresh-keeping coated paper and preparation method thereof

A technology of coated paper and anti-mildew coating, which is applied in papermaking, coating, paper coating, etc., can solve the problems of affecting human health, short storage time, and poor storage effect, so as to inhibit the growth of mold and shorten the storage time. , the effect of prolonging the storage time

Active Publication Date: 2020-12-22
常德市德源招商投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the field of food packaging in family life, supermarkets, hotels and restaurants, and industrial production, chemical preservatives are often used in traditional methods, but excessive use will affect human health
At present, a method that is more and more widely used is to use coated paper to package fruits and vegetables to prolong their storage life, but the general coated paper has poor preservation effect on fruits and vegetables, and the preservation time is short

Method used

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  • Anti-mold and fresh-keeping coated paper and preparation method thereof

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preparation example Construction

[0030] The method for preparing the above mildew-proof and fresh-keeping coated paper according to an embodiment of the present invention comprises the following steps S1-S3:

[0031] S1. Form an anti-mildew coating on the first side of the base paper.

[0032] Specifically, the raw materials of each component are weighed according to the above ratio and mixed with water to make pulp to obtain an anti-mold coating, and then coated on the first side of the base paper to form an anti-mold coating after drying.

[0033]S2. Coating the ethanol solution of hollow porous polymer microspheres on the second side of the base paper, coating the slurry obtained by mixing the adsorbent and water on the second side, and forming a fresh-keeping coating after drying.

[0034] Thus, the fresh-keeping coating is composed of hollow porous polymer microspheres loaded with adsorbent, and the adsorbent is at least partially loaded inside the hollow porous polymer microspheres.

[0035] Preferably...

Embodiment 1

[0044] Coating anti-mildew paint on the first side of the base paper to form an anti-mildew coating, the anti-mildew coating includes 78% water-absorbing resin and 22% anti-mold agent, wherein the water-absorbing resin is composed of 7% polyvinyl alcohol 1788, 6% polyvinyl alcohol Vinyl alcohol 2488 and 87% methyl methacrylate - butyl acrylate - acrylic acid copolymer, antifungal agent is composed of 25% sodium ascorbate, 25% salicylamine and 50% carson.

[0045] The second side of the base paper is coated with an ethanol solution of hollow porous polymer microspheres, and the material of the hollow porous polymer microspheres is an acrylic ester copolymer. The adsorbent was obtained by weighing each component according to the following mass percentages: 62% potassium permanganate, 27% methylcyclopropene, 8% chromium trioxide, 2% activated carbon and 1% montmorillonite. Mix the adsorbent with water to obtain a slurry, the mass percent concentration of the adsorbent is 0.5%, co...

Embodiment 2

[0047] Coating anti-mildew paint on the first side of the base paper to form an anti-mildew coating, the anti-mildew coating includes 78% water-absorbing resin and 22% anti-mold agent, wherein the water-absorbing resin is composed of 7% polyvinyl alcohol 1788, 6% polyvinyl alcohol Vinyl alcohol 2488 and 87% methyl methacrylate - butyl acrylate - acrylic acid copolymer, antifungal agent is composed of 25% sodium ascorbate, 25% salicylamine and 50% carson.

[0048] The second side of the base paper is coated with an ethanol solution of hollow porous polymer microspheres, and the material of the hollow porous polymer microspheres is an acrylic ester copolymer. Mix potassium permanganate with water to obtain a slurry, the mass percentage concentration of potassium permanganate is 0.5%, coat the slurry on the second side, then put it in an environment of 20°C for slow drying for 5 hours, and then put it in an oven Dry at 60°C for 2 hours to form a fresh-keeping coating. According ...

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Abstract

The invention relates to mildew-proof fresh-keeping coated paper and a preparation method thereof. The mildew-proof fresh-keeping coated paper comprises base paper, a mildew-proof coating, a fresh-keeping coating and a barrier coating, wherein the base paper comprises opposite first and second surfaces; the mildew-proof coating covers the first surface; the fresh-keeping coating covers the secondsurface; the barrier coating covers the surface of the fresh-keeping coating far away from the base paper; the fresh-keeping coating consists of hollow porous polymer microspheres loaded with an adsorbent; the adsorbent comprises potassium permanganate; and the adsorbent is at least partially loaded inside the hollow porous polymer microspheres. The mildew-proof coating of the mildew-proof fresh-keeping coated paper can inhibit the growth of molds in a package, is not easy to mildew under the condition that fruits and vegetables are not pretreated, and can remove ethylene more efficiently, andthe barrier coating can isolate air, water vapor, bacteria and the like outside the package from diffusing to the inside of the package, so that the preservation effect is improved and the preservation time is prolonged.

Description

technical field [0001] The invention relates to the field of mildew-proof and fresh-keeping technology, in particular to a mildew-proof and fresh-keeping coated paper and a preparation method thereof. Background technique [0002] Fresh fruits and vegetables are important sources of daily vitamins, minerals and dietary fiber, and have unique shapes, colors, aromas and tastes. The tissues of fruits and vegetables have high water content and are soft and tender, but they are perishable and degenerate, and they are not resistant to storage. After harvesting, they are prone to water and lose their freshness, resulting in reduced quality and even loss of commodity value and nutritional value. The demand for fruits and vegetables is second only to grain in the world. After years of development, my country has become the largest producer of fruits and vegetables in the world. With abundant germplasm resources and a long history of cultivation, it is the birthplace of many kinds of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/82D21H19/24D21H19/20D21H19/22D21H19/28D21H19/14
CPCD21H19/14D21H19/20D21H19/22D21H19/24D21H19/28D21H19/82
Inventor 余赞钟文张勇军田璐韦雪雪罗臻杜建军
Owner 常德市德源招商投资有限公司
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